Query om Pressure Transducer. Plz Help..! Its urgent

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pratibha m d

Joined: 01 Mar 2007
Posts: 224
Helped: 148

07 Oct 2008 8:14 Query om Pressure Transducer. Plz Help..! Its urgent

Hi All,

I want to get some information regarding where can I buy "Impedance pressure transducer of 5 mm in diameter and 1mm thick". I tried to find in google. But couldn't get any information. Kindly help me. Its urgent.

Thanks

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subharpe

Joined: 09 Jan 2008
Posts: 244
Helped: 34
Location: Bangalore,India

07 Oct 2008 9:28 Re: Query om Pressure Transducer. Plz Help..! Its urgent

Are you looking for strain gauge type sensor? How about Piezoresitive sensors? You will find in any MEMS book. I can hint you something on this. You can use a piezoresistor in a bridge circuit with three other normal resistors such that without any pressure load the bridge is balanced. With pressure the resistivity of the piezoresistor changes, changing the output signal linearly with the resistance. The output signal is a measure of the pressure.

You will find the details in any MEMS book. Or search for piezoresistive transducers in the internet.

pratibha m d

Joined: 01 Mar 2007
Posts: 224
Helped: 148

07 Oct 2008 11:19 Re: Query om Pressure Transducer. Plz Help..! Its urgent

Thank u so much. But I want to know if I can get it as a product. Its required in dental application.

Thanks

KMoffett

Joined: 11 Feb 2008
Posts: 107
Helped: 10
Location: Minneapolis MN USA

07 Oct 2008 17:06 Re: Query om Pressure Transducer. Plz Help..! Its urgent

That's pretty small! What's the maximum force that will be measured?

Google for: miniature force sensors

You will get sources like this: http://www.tekscan.com/flexiforce.html?gclid=CJur_8e_lZYCFQ4hnAodsWYTEw or http://www.cui.com/pdffiles/SF-X.pdf and others.

Ken